吉林省松花江流域经济发展与水环境质量的动态耦合及空间格局

Dynamic coupling and spatial disparity of economic development and water environmental quality in Songhua River Basin of Jilin Province,Northeast China

利用耦合度模型对1991—2010年吉林省松花江流域经济发展与水环境质量进行动态耦合和空间格局分析.结果表明:研究期间,研究区经济发展指数和水环境指数呈同步上升趋势,基本处于协调状态;从耦合协调度来看,经济发展与水环境系统交互耦合具有复杂性、非线性和时变性的特点,整体上经历了较低水平耦合阶段、拮抗时期和磨合阶段3个阶段;从耦合度来看,耦合度始终处于第一象限,为基本协调的发展阶段;从耦合度的空间差异性来看,位于河流上游的长春、吉林的耦合度高于下游的松原、白城地区.耦合度不仅与经济发展相关,同时受区域之间的联系和区域内部的产业结构等影响.上游城市的经济发展明显高于下游的城市,其在环境质量保护以及减少污染排放方面采取了更严格的措施,水环境质量较高.

By using coupling model,this paper analyzed the relationships between the economic development and water environment quality in Songhua River Basin of Jilin Province from 1991 to 2010.During the study period,both the economic development index and the water environment index in the Basin showed an uptrend,basically in a coordination state.From the perspective of coupling coordination degree,the economic development and the water environment system were in interactive coupling,with the features of complexity,nonlinearity,and time-variation.As a whole,the coupling experienced three stages,i.e.,low level stage,antagonistic stage,and breaking-in stage.As for the coupling degree,the coupling of the economic development and the water environment system was in the first quadrant,i.e.,at a development stage of basic coordination.From the perspective of spatial disparity,the coupling degree of the economic development and the water environment system was higher in the upper reaches of the Songhua River Basin,including Changchun and Jilin,than in the lower reaches,including Songyuan and Baicheng.The coupling degree was not only significantly positively correlated with regional economic development,but also affected by the links between the regions as well as the industrial structure within the regions.The economic development of the cities in the upper reaches of the Songhua River Basin was obviously higher than that in the lower reaches,and,due to the adopting of more strict and effective measures for environmental protection and pollution emissions reduction,the water environment quality in the upper reaches of the Songhua River Basin was better.